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Finding the Fourth Proportional to 192,556.58, 288,835.68 and 126,415.22

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Solution

The fourth proportional to 192,556.58, 288,835.68 and 126,415.22 is: 189,623.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,556.58 : 288,835.68 = 126,415.22 : x
  2. Step 2: Convert to fraction form
    192,556.58/288,835.68 = 126,415.22/x
  3. Step 3: Cross multiply
    192,556.58x = 288,835.68 × 126,415.22
  4. Step 4: Simplify right side
    192,556.58x = 36,513,224,586.87
  5. Step 5: Solve for x
    x = 36,513,224,586.87/192,556.58
  6. Step 6: Final answer
    x = 189,623.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.